6464309 has 4 divisors (see below), whose sum is σ = 6475404. Its totient is φ = 6453216.

The previous prime is 6464299. The next prime is 6464317. The reversal of 6464309 is 9034646.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9034646 = 2 ⋅4517323.

It can be written as a sum of positive squares in 2 ways, for example, as 2146225 + 4318084 = 1465^2 + 2078^2 .

It is a cyclic number.

It is not a de Polignac number, because 6464309 - 2¹² = 6460213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6464329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4622 + ... + 5855.

It is an arithmetic number, because the mean of its divisors is an integer number (1618851).

Almost surely, 2^6464309 is an apocalyptic number.

It is an amenable number.

6464309 is a deficient number, since it is larger than the sum of its proper divisors (11095).

6464309 is a wasteful number, since it uses less digits than its factorization.

6464309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11094.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 6464309 is about 2542.5005408062. The cubic root of 6464309 is about 186.2833485321.

The spelling of 6464309 in words is "six million, four hundred sixty-four thousand, three hundred nine".